The secret formula for the perfect bubble

Today myself and Finn went out to our friend's house for a day of fun. You never know what the day will bring when we visit Penny, Poppy and Noah. Today the kids ran round in their pants and were in and out of the paddling pool. I, like Finn love hanging at their house, think it's because Penny is a fellow creative like myself and also a little barking ;-)
Today we spent a good hour trying to find the formula for the perfect bubble (ie:- correct mix of solution and right settings on the camera, background, wind speed/direction)..... it all got quite scientific! Best results being from a mix of shampoo, bubble bath and fairy liquid, an old rusty biscuit tin and some string but we can't tell you the amounts as that's a secret....... I've got loads of great shots but this is a favourite and it's also a self portrait........ Good times :-)